SCIENCE CHINA Materials•2026•DOI: 10.1007/s40843-026-4425-4
Flexible and weavable alternating-current electroluminescent (ACEL) fiber devices are pivotal for wearable displays and human-computer interfaces, yet their intrinsic lack of color tunability restricts high-density information interaction. This study presents a dynamically color-tunable electroluminescent fiber device with a coaxial winding structure that integrates multiple fiber electrodes emitting the three primary colors. Through simple voltage driving, the device achieves a color gamut covering 131.07% of the sRGB standard, enabling arbitrary full-color tunability, including standard white light with CIE coordinates of (0.31, 0.33). The emission peak is continuously tunable over a 161.7 nm range, a 4-fold enhancement compared to previously reported ACEL fibers. The coaxial winding architecture is compatible with large-scale fabrication, yielding hundred-meter-scale fiber devices with a luminance variation of only 2.76%. The electroluminescent performance remains stable under stringent industrial standards: 10,000 friction cycles, 20 accelerated washing cycles, and 10-day storage at 105 °C and −20 °C. Integration into a smart textile watchband demonstrates real-time heart rate visualization via progress color changes and gesture-controlled color switching, validating its potential as an effective human-computer interface.
SCIENCE CHINA Materials•2026•DOI: 10.1007/s40843-026-4337-2
Silica aerogels are recognized as leading super-insulating materials due to their ultralow thermal conductivity, yet their intrinsic brittleness and poor processability restrict practical deployment in complex industrial and extreme environments. This study introduces a macro-scale 'stiff–soft' synergistic strategy, combining a macroscopically processable, soft-and-tough framework as the load-bearing component with hard-and-brittle polymethylsilsesquioxane (PMSQ) aerogels as the insulating component. A pressure-driven assembly process enables viscosity-tunable PMSQ gel inks to be controllably infused into various hollow frameworks, including honeycomb panels, wheat straws, and hollow fibers. Guided by a modified Hagen–Poiseuille model, ink viscosity is precisely matched to the geometric parameters of the hollow structures. The resulting composites achieve compressive strength of 2.5 MPa, flexural strength of 6.25 MPa, and tensile strength of 40 MPa, while maintaining excellent thermal insulation. This versatile and scalable approach offers a new design paradigm for mechanically adaptive silica aerogel composites in thermal management applications.
Environmental Chemistry•2026•DOI: 10.7524/j.issn.0254-6108.2024092906
Microplastic pollution in rivers and lakes has become a research hotspot, yet studies in Anhui Province have predominantly focused on northern and central regions, leaving southern Anhui under-investigated. This study addresses that gap by examining the Xin'an River in Huangshan City, a typical river in southern Anhui. Surface water and sediment samples were collected in December 2023. In surface water, microplastic concentrations ranged from 350 to 3700 n·m−3, with particles of 0–0.5 mm dominating (33.93%). Fibrous shapes were most prevalent (59.83%), and colored particles accounted for 50.27%. In sediments, concentrations ranged from 25 to 200 n·kg−1, with 0–0.5 mm particles again dominant (49.63%). Fibers comprised 47.08% of sediment microplastics, and white particles accounted for 34.74%. Polymer analysis identified polyethylene terephthalate (PET) as the most abundant material (36.61%), followed by polyamide (PA) (23.22%). Source analysis suggests that fibrous microplastics originate primarily from fiber-based products such as clothing, home textiles, and fishing nets. These findings provide essential baseline data for water resource management, pollution assessment, and ecological remediation of the Xin'an River.
Environmental Chemistry•2026•DOI: 10.7524/j.issn.0254-6108.2025102002
The ultraviolet/chlorine (UV/Cl2) advanced oxidation process generates multiple radical species, enabling synergistic disinfection. However, the systematic influence of UV intensity on process performance remains inadequately characterized. This study investigated UV intensities from 0.25 to 2.0 mW·cm−2, assessing chlorine photolysis kinetics, bacterial inactivation, and disinfection by-product (DBP) formation. Results demonstrate that inactivation efficiency is not solely governed by total UV energy but is co-regulated by reaction kinetics and mass transfer. Increasing UV intensity accelerated chlorine photolysis by 33.7%–277.8%, elevating steady-state concentrations of hydroxyl radicals and chlorine radicals by factors of 1.6–3.8 and 1.3–3.2, respectively, thereby enhancing initial inactivation rates. However, higher intensities reduced cumulative chlorine exposure (CT value) to 14.3%–55.7% of baseline, causing overall inactivation to first increase then decrease. At a fixed UV dose of 150 mJ·cm−2, an intensity of 1.0 mW·cm−2 achieved optimal 6.5-log inactivation of Escherichia coli and the lowest bacterial reactivation rate (0.07%). Common water constituents (HCO3−, Cl−, natural organic matter) inhibited disinfection, with natural organic matter exerting the strongest suppression (2.7-log reduction). Notably, 1.0 mW·cm−2 exhibited the greatest resistance to interference. Elevated intensity reduced total organic halogen formation from 33.7 μg·L−1 to 19.0 μg·L−1. Balancing disinfection efficacy and DBP risk, 1.0 mW·cm−2 is identified as the optimal UV intensity for the UV/Cl2 process in sand-filtered water treatment.
SCIENCE CHINA Materials•2026•DOI: 10.1007/s40843-025-3968-3
The commercialization of perovskite solar cells (PSCs) is hindered by stability issues primarily stemming from interfacial defects. This study employed a machine learning (ML) screening approach and constructed a learnable weighted ensemble model (LWEM) to enhance prediction robustness for identifying effective interface passivation materials. The ML model predicted that an imidazolium salt-based interface modifier, 1-benzyl-3-methylimidazolium tetrafluoroborate (BMT), is suitable for planar n-i-p PSCs. Subsequent experimental results demonstrated that BMT provides synergistic passivation via an 'ion-coordination dual-lock' mechanism that significantly suppresses non-radiative recombination, facilitates hole extraction, and improves the quality of the perovskite film. The BMT-modified devices achieve a significant increase in power conversion efficiency (PCE) from 22.45% to 24.89% under AM 1.5G illumination, and attain a high PCE of 41.31% under 1000 lux light emitting diode (LED) indoor lighting. Additionally, the modified devices exhibit outstanding stability under long-term storage and maximum power point tracking conditions. This work provides a strategy for developing high-performance and highly stable PSCs for both indoor and outdoor applications.